Bitcoin is precious and before moving it people need to know what are the use cases and the risks.  There are several protocols make WBTC possible.

It is well known that DeFi took the cryptocurrency space by storm and the main reasons someone would want to convert their BTC to WBTC is DeFi.

Defi proved that payment is not the only area of finance that can be decentralized. In reality, DeFi focuses on rebuilding all financial services in to a completely decentralized Permissionless way. Also, it permits creating financial applications which were previously just impossible to make.

Ether and other tokens that are native to the Ethereum blockchain can take full advantage of this amazing new space. These tokens can be used as a collateral in the lending protocols like Compound or Aave. They can also be traded in a completely permissionless way on Uniswap.

On top of that these tokens can generate yield.  By being lent out or by providing liquidity to a decentralized exchange. BTC on the Bitcoin Network although very secure has very limited use cases. You can mainly send your BTC from one address to the other (or) just hold or wait until it appreciates in value.  When it comes to other international services, you have to rely on centralized companies.

Taking lending as an example, those who like to make a yield on the BTC or use it as collateral to take out a loan you will have to make use of a centralized company. For instance, Block Fi, where it becomes important to give custody of the BTC and KYC company, which is not an ideal solution especially for people who believe in decentralized and permissionless nature of cryptocurrencies. Not being able to use BTC in DeFi was one of the basic drives for making BTC available in Ethereum.  Using BTC in DeFi also does make sense. For example, BTC as a fixed supply store of value asset with established history can be a valuable collateral. Thus, a user will be able to lock their BTC and borrow against it in a decentralized fashion.

Metamask is one of the best ways to interact with the Ethereum Blockchain.  The simplest way to get some Wrapped Bitcoin is to get it from places like Kyber Swap. You can simply swap some of your Ethereum tokens and buy some Wrapped Bitcoin from there. Those who have some Ethereum or Dai stablecoins will be able to get it some Wrapped Bitcoin easily.

For those who have Bitcoin in the wallet it would be good to go to the WBTC.cafe, connect the metamask wallet, key in the worth of Bitcoin for which you need to get the WBTC. Also, you need to enter the destination address of the Metamask wallet.  There will be some Ren Virtual Machine Fees and Bitcoin fees the remaining will be converted to WBTC. It will be a little less the fees paid than the value of BTC deposited.